Apparatus for treating waste hydrochloric-acid-pickle liquors.



G. H. STARCK. APPARATUS FOR HEATING WASTE HYDROUHLURIC ACID PICKLE LIQUORS. APPLIUMLON Mmm sfumaA 1012.

melma Mm. w, 1914.

i trimno .noe-ori Specifico ti on of Letters: Vlattnt.

llirtcntetl Mar. Tij?, Illllit citizen oit the United States, reeidinggl; at`

llaulfoffan, in the county ol" Lake and State of illinois, have invented a certain new and useful improvement in Apparat-rua :tor

'.lfreatingl 1irl/aste l-lfydrochloric-Acidlickle 'larp-tors, oi which the following; is u specifi cation.

'in the process of galvanizing metallic articles such, for instance2 as sheet metal, Wire, and pipes, the articles to be galvailizcd are inserted .in a tant: or other receptacle containing' hydrocl'iloric acid, for Athe purl pose of cleaniiu.;I the Surface ol.l the article before it is galvanized. When iron is thus subjected to the inllnence of hydrochloric acid, a chemical action takes place, forming;4 iron chloride, not capable oi cleaning; the iron surface. l'u other Words= a5 sueceeeive articl le are thus treated by the hydroelllm'ic acid, the solution or piclde lit-comers Wealte and weaker until linally so lunch o'l` he strength of the liydrochloric acid is `gone that the operation cannot be :further elli` ciently continued, and at. the saine time a deposit of solid material containingl or earrying one or both of Said chloride is lorined in the bottom oit' the eeid tanlf. '.lhe eolld material just referred to can, il dried and properly treated, be used as the has-,ie lor a very satisfactory paint.

The object el this `invention is lo provide a plant ol neat and compact ilorm, which can be readily instelled and. operated, which will subdivide the above mentioned iron chlorids into hydrochloric acid so that it can be used over again, and at the wine time recover a paint pigment aS a hwproducl, Without any additional cont.

The invention consiste inv a pl unl, capable of carrying' out the :foregoing oliiecte7 which possesses Athe `,feneral and specilic il'eatures and details ol construction hereafter dcscribed in the speciliczillion and claiinsi.

ln the drawings, Figure l. is a sectional side view ol a plant .illustrating 'this inveir 'tion in its preterred form. Fig'. is; a sectional detail view olf the top and cover Jr'or a washing' cylinder. Figa il is; an enlarged detail sectional View olf the :feedend oll the`- receptacle in which solid paint material is dried. l i

At one end of lthe plant are placed a plurality of lire boxeo l0 having gratee l2, the reepeoivI gi-atei; and tire boxes being bounded by suitable Walle as .l.l-, jl and i6. .Any number of such rrr-.iles may he provided, depending` upon the eine ol the plant installed. Directlyl above thee gratos '12, so that the lire built thereon nay reedilj/ contact it, is placed encor 'nA e refiu'tss 1.5i supported, alI one cud on any suitable l-alpportI as iron rod Lll, and at the other end in the end wall ld. Illiaretort 1S .mayv he ol? any suitable cross section; in. the preferred torni 0l construction a circular' pipe is uod, a plurality of them being placed one beyond the other iu a .horizont-.ll planta as viewed in Fig. l, so that only one is seen in the drawings. Both ende` o'l this retort .l are open, the le'lt hand. ond beinepartially closed h r a perforated pluto or chamber 0x2, through which the outer air may passe into the receptacle 1S. 'lille ight hand end opeir,` into a large pa5s-agc\\'ay ill which lends` lhroufrjh the gratos .lil over an ordinary paddling; furnace, .bath or hearth flo, and thence into the di harge paseageway 528, i)5), l, 3l., Sil, and 23.5. Adjacent to the pas ,geway .213, just referred tra is what is called in the trade a pickle tank 14-, supported upon any Suitable Standard al. a suliieient height Se that the peut 235 leading` troni thin tank, and controlled by valve ill", enters the removable box 3h oll a lilliel ai. inouulrd o1. a suitable numiort so that its spout. 255, controlled by valve Si), entera passageway ll at t sullicicnt heifj l alloro the 'furnace so that the liltered pit-Idol7 may drop or trickle into the hearth fill, where it is; healed by the llames` coming; 'lfriun the lire upon the grate-s lf3 and evaporalcd so that it paseos through the deliveryv pipo 253, 30. 3i?, as herctotore desicrihed.

'the liltcr box 8G is lilted into a 'trarne with a handle ,l-l) so as to be conveniently li'lilcd o ll' and cleaned the solid residue lel't therein being used in the paint tubes lll. f

lhe reason lor having two "pie-klei 1'cleptin-lee il# and :lo that -when the acid taillis` are emptied (or drawn off), a considerable tplantity o'l` solid substance always; follows Vith the liquid. ll this is allowed to drip into the hearth Elo, this solid subslznnce will he spoiled tor paint pigment pur- .posee inal n|uch as'it will be mixed with aehesland other non-coinbustihle lsuljlstanees.

'.lh'e end 233 ol the delivery pipe just described, dieehargee into a vertical c )i'lindrr t.l2 ntnnially about twenty lcet high, whirh is connected at its lop to a dturnwardly ineter at the bottom and three-sixteenths of an inch in diameter at the top, the thickness oi'A the plate i8 being about one-half inch. Suitably mounted upon the tops i8 of the cylinders 42 and let are the discharge ends 5G ol' a water pipe 58 connected by pipe 60 to any suitable source of supply. Water `Daseins; through this pipe discharges 'hrough ends 5G into the interior of the dish lle-50 and thence passes through the opening :Sil down into the cylinders 4t2, del. rlhe openings 5d are of such a size and quantity that the Water thus enters the cylinders l2 and 44e in a spray which, meeting the hot gases coming from the end oi retort 18 and from the furnace receptacle 26, absorbs the chlorin gas contained therein .and forms hydrochloric acid, which drops down into the collecting tank 62, from which it is drawn into jars or other receptacles 64 lby means of the valves 66, or the like, The products of combustion other than the hydrochloric acid, pass out of the passageway 46.

lhe use of the lugs' and downwardly tapering` holes 5ft is important in that as long as there is Water on top of the plate t8 and above thetops of the adjacent lugs 52, no heated gas Will pass upward through the passageivays 54, into the open air. rlhis is important when Water is not passing from pi pes' 'limthrough openings 54, thereby filling them, as otherwise there Would be an escape into the open air of considerable quantities ot the gaseous products delivered from the retorts 1S and 2G.

As olten all of the liquid pickle Within the retort (or retorts) 18 is driven olliA and the remaining product has, therefore, beeinne thoroughly dried., the retort einptied by the insertion oi. a scraper in the .left hand end (the cover 22 being removed lor the purpose) and new, solid, Wet substance placed in the retort.

t will be seen from. the foregoing'that the saine lire which is needed to evaporate the pickle solution Within the hearth 26, dries out the solid paint material within the retorts i8 and that the gaseous products ot beth o, "ations pass througg'll to the washing cyli 4t2 and /lllwhere all ot the hydro- ,z 'crie acid is r vcrcd in solution.

` will he noticed that 'that portion ort the ha rgie pipe or passageway heretofore dcl-icd, represented hy the ninneral 3l, is]

placed under ground (represented by the line ln practice` it is most satisfactory to have the lengt-h of this pipo li about fifty ite/et, as byl so doing' the gases passing through it are slightly cooled and brought to a inorcvsuitable condition ier action by the water delivered through nozzles 5G. This pipe 3l is supplied With a man hole 72, through which it may be cleaned if necessary.

`For the sake of clearness, the u'ords retort and hearth have been used in the specification and claims but these Words a're not to be understood as limiting applicant to the particular forms and shapes of these devices shown in the drawings,

l. claim:

l. In. apparatus for treating Waste hydrochloric vacid pickle liquor, in combination `with a hearth adapted to contain a liquid, and-'lire grates arranged so that Haines from material placed thereon will pass over said hearth, a retort, adapted to contain Wet solid material placed immediately adjacent to said lire grates so that said `flames contact with said retort before passing to the hearth and that vapor driven oil from the solid niaterial- Within the retort passes with said flames over the hearth and a recovery chamber into Which the resulting` gaseous products pass and means providing; a Water spray Within said chamber for the purposes set forth.

2. ln apparatus for treating Waste hydrochloric acid pickle liquor, in combination with a hearth adapted to contain a liquid and tire grates arranged so that llames from material placed 'thereon Will pass over said receptacle; a retort open at both ends for the passage of air therethroughadapted to contain Wet solid material, said retort being placed immediately adjacent to said fire grate so that said iiamescontact with said retort before passing` to the hearth and that vapor driven oil' .trom the solid material Within the retort mixes With the air passing` therethrough and passes with said tlames over the hearth and means `tor collecting* the hydrochloric acid from the resulting gaseous products, lor the purposes set forth,

ln apparatus ior treating waste hydrochloric acid pickle liquor, in combination with a hearth adapted te contain a liquid and lire gratos arranged so that ilaines from material placed thereon will pass over said hearth, a retort open at both ends for the lpassage of air therethrough adapted to conlain Wet solid material, said retort being placed immediately adjacent to said lire tirate so that said llames contact with said retort betere passing lo the hearth, and that Vapor driven oil" iron; the lid material VWithin said retort in s u' el" passing therethrough and pass s wila said lames over the hearth, and means "for regu-latini;

the volume of air admitted to and through lating the size of an opening in the retort 15 said retort, for the purposes set .'lorth. through which air may be admitted past the 4. In apparatus -lor treating Waste hydro solid material therein to the interior o the ehlorie acid pickle liquor, in combination Furnace, andthrough which solid material with a hearth adapted to contain a liquid, may he inserted and removed during the and fire gratos arranged so that llames from operation of the device without disturbing 20 material placed thereon will pass over Said said operation. hearth; a retort adapted t0 Contain 'wet solid In witness whereol, I hare hereunto submaterial placed immediately adjacent to scribed my name in the presence oi two Witsaid fire gratos so that said llames Contact messes.

with said retort before passing to the GUSTAF H. STARCK. hearth that vapor driven ofl from said solid \Vitnesses: material within the retort passes with said F. C. Brau,

flames over the hearth, and means for regu-v B. C. BRENNAN. 

